Band-saw-moving machine.



J. E. HIBBERT. BAND SAW MOVING MAUI-HUB. APPLIOATIOH mum 1350.8. 190a.

HIS ATTOZNEY.

Patented Aug. 31, 1909.

\ INVENTOR Joan E. HIBBERT.

UNITED stm ri s PATENT OFFICE.

JOHN E. HIBBERT, F STIRLING CITY, CALIFORNIA.

BAND-SA'W-MOVING MACHINE.

To all whom it may concern:

Be it known that I, JOHN E. Hmnnn'r, citizen of the United States,residing at Stirling City, in the county of Butte and State ofCalifornia, have invented new and useful Improvements in Band-Saw-MovingMachines, of which the following is a specification.

This invention relates to a device for moving band saws.

The object of the invention is to provide a machine for moving a bandsaw on the roller or hammer bench while tensioning whereby the workwhich has heretofore been done by hand, may be done mechanically, andenable one to tension the band saw with very much less time than can bedone by the means now in use. My machine will accommodate band sawsranging from inches to 18 inches in width, and any length saw, and isconstructed to accommodate any band saw roller bench in use.

It consists of the parts, the construction and combination of parts, ortheir equivalents, as will be set forth in the following specificationand accompanying drawings, in which the fi re is a pers ective view,showing the app ication of the invention.

A represents the saw to be tensioned. In the mode of operation andconstruction, as embodied in a successfully operated machine, I providea shaft 2 crosswise of and beneath the saw, which shaft is journaled inbearings 3, formed upon a suitable castin 4, which may be secured to thefloor or bone upon which the band-saw is mounted. The saw travels aroundsuitably spaced idle rollers 5.

Secured upon the shaft 2, and near one end, is a small pulley 6, drivenconstantly by a belt 7 from any desirable portion of the machinery, nothere shown. A friction drive pulley 8 is also secured at any suitablepoint on the shaft; the saw bein ada ted to rest on this pulley with theteetfi of t e saw projecting beyond one end of the pulley.

Pulley 8 comprises in this instance a sleeve 9, having a shoulder 10,through which is a hole adapted to receive a screw 12 by which thesleeve 9 is locked on the shaft 2. The opposite end of the sleeve 10 isreduced and threaded to receive a nut 13. A tubular section of rubber orother suitable material is mounted upon the sleeve 9, and tightly heldin place by the nut 13. Disposed parallel with and just above the pulley8, so as to en- Specification of Letters Patent.

Application filed December 8, 1908.

Serial No. 466,438.

gage the band saw 5 is a counter friction roller 14, loosely carriedbetween suitable collars on a lever pivoted at 16 in the cap of one ofthe bearings The outer end of the lever 15 passes throu 'h a collar 17which is connected to :1 threaded rod 18 adjustably secured by nuts 19to an operating lever or treadle 20. The treadle is suitably pivoted at21 to a bracket or the like, secured upon the floor or bench, in such amanner that the pivot 21 may be quickly removed and the treadle collar21 slid off the lever 15. If the treadle is deressed, by the operator,the lever 15 carryto traverse the bench at any desired speed.

Manifest-1y the speed of the saw may be controlled to a nicety byvarying the pressure upon the treadle 28. Any suitable means may beprovided for maintainin the roller 14 normally out of contact witi thesaw; such being shown here as a spring 23 secured to the lower side ofthe treadle, and reacting against the floor or bench.

When it is desired to withdraw the band saw, for any reason from thedevice, the

ivot 21 is taken out, the treadle removed rom the lever 15 and the leverturned up about its pivot 16, when a pin 24 may be inserted throughholes 25 in the bearlng cap 3, just beneath the lever where it willremain as shown in the dotted lines.

While I have shown a collar 17 connecting the lever 15 to the treadle20, it is obvious that any simple means may be substituted in lieuthereof, whereby the lever may be disconnected from the treadle withoutdismounting the treadle from its pivot.

Having thus described my invention, What I claim and desire to secure byLetters Patent is 1. The combination in a band-saw movin apparatus, of adriven shaft, a sleeve fixe thereto, a friction ulley on said sleeve, :1second shaft aral el with the first shaft having one en pivotallymounted, a roller loosely mounted on second shaft between which rollerand said pulley the saw is adapted to pass, a lever at the free end ofthe second shaft having one end pivotally secured and the oppositeportion serving as a treadle, said second shaft being connected to anintermediate portion of said lever.

Patented Aug. 31., 1909.

2. The combination in a band-saw moving apparatus, of a driven shaft, asleeve secured to said shaft having one end screwthreaded and having theopposite end provided with a shoulder, a pulley on said sleeve abuttingagainst said shoulder, a nut adapted to engage the threaded end of thesleeve and to bear a ainst the adjacent end of the pulley, a shag;parallel With the first shaft having one end pivotally secured, a rollerloosely mounted on a second shaft and be tween which roller and saidpulley the saw is adapted to pass, and a pivoted lever connected to theother end of a second shaft and affording means for moving said shaft tocause its roller to bear with a variable pressure against the saw.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOHN E. I-IIBBERI. Witnesses J. H HIBBERT, P. H. Dnmmn.

